Effects of adsorbent dose, its particle size and initial arsenic concentration on the removal of arsenic, iron and manganese from simulated ground water by Fe3+ impregnated activated carbon

Mondal, Prasenjit; Majumder, C. B.; Mohanty, Bikash

doi:10.1016/j.jhazmat.2007.05.040

Cited by 191 publications

(109 citation statements)

References 20 publications

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“…A number of adsorbent materials have been studied for their ability to remove heavy metals and they have been sourced from natural materials and biological wastes of industrial processes (Igbinosa and Okoh, 2009). These materials including: activated carbon (Uzun and Guzel, 2000;Goel et al, 2005;Issabayeva et al, 2007;Mondal et al, 2008), chitosan and carrageenan (Bong et al, 2004), lignite (Allen et al, 1997), kaolinite and ballclay (Chantawong et al, 2003), diatomite (Ulmanu et al, 2003), coconut fiber (Igwe et al 2007) and limestone (Aziz et al, 2004). However, adsorption by activated carbon had been reported as a technically and economically viable technology for heavy metal removal (Huang and Morehart, 1991;Bong et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of copper, nickel and lead ions from synthetic semiconductor industrial wastewater by palm shell activated carbon

Onundi

Mamun

Khatib

et al. 2010

Int. J. Environ. Sci. Technol.

248

116

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Granular activated carbon produced from palm kernel shell was used as adsorbent to remove copper, nickel and lead ions from a synthesized industrial wastewater.Laboratory experimental investigation was carried out to identify the effect of pH and contact time on adsorption of lead, copper and nickel from the mixed metals solution.Equilibrium adsorption experiments at ambient room temperature were carried out and fitted to Langmuir and Freundlich models. Results showed that pH 5 was the most suitable, while the maximum adsorbent capacity was at a dosage of 1 g/L, recording a sorption capacity of 1.337 mg/g for lead, 1.581 mg/g for copper and 0.130 mg/g for nickel. The percentage metal removal approached equilibrium within 30 min for lead, 75 min for copper and nickel, with lead recording 100 %, copper 97 % and nickel 55 % removal, having a trend of Pb 2+ > Cu 2+ > Ni 2+ . Langmuir model had higher R 2 values of 0.977, 0.817 and 0.978 for copper, nickel and lead respectively, which fitted the equilibrium adsorption process more than Freundlich model for the three metals.

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Section: Introductionmentioning

confidence: 99%

Adsorption of copper, nickel and lead ions from synthetic semiconductor industrial wastewater by palm shell activated carbon

Onundi

Mamun

Khatib

et al. 2010

Int. J. Environ. Sci. Technol.

248

116

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“…It can be understood from Fig. 3b that removal efficiency, increased with increasing biosorbent dose for both phenol and cyanide, but after a definite dosage, the removal efficiency was not increased considerably (Mondal et al 2008). Thus, the optimum amounts of CSAC dose for additional biosorption experiments were designated as 30 g/L for both phenol and cyanide.…”

Section: Effect Of Biosorbent Dosementioning

confidence: 91%

“…The coconut shell activated carbon was washed with Millipore water to eliminate residual chemicals and then the sample was dried at 110°C temperature for 24 h. The surface modification of CSAC was achieved by impregnation with ferric chloride (Fecl 3 ). The impregnation was carried out at 70°C in an oven until the complete evaporation of water was detected, and then the CSAC was dried at 110°C for 24 h (Mondal et al 2008). The dried sample was washed with Millipore water until the washing liquid was free from iron, and then dried to constant weight and used as impregnated activated carbon for further studies.…”

Section: Preparation Of Biosorbentmentioning

confidence: 99%

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Equilibrium isotherm and kinetic studies for the simultaneous removal of phenol and cyanide by use of S. odorifera (MTCC 5700) immobilized on coconut shell activated carbon

Singh

Balomajumder

2016

Appl Water Sci

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In this study, simultaneous removal of phenol and cyanide by a microorganism S. odorifera (MTCC 5700) immobilized onto coconut shell activated carbon surface (CSAC) was studied in batch reactor from mono and binary component aqueous solution. Activated carbon was derived from coconut shell by chemical activation method. Ferric chloride (Fecl 3 ), used as surface modification agents was applied to biomass. Optimum biosorption conditions were obtained as a function of biosorbent dosage, pH, temperature, contact time and initial phenol and cyanide concentration. To define the equilibrium isotherms, experimental data were analyzed by five mono component isotherm and six binary component isotherm models. The higher uptake capacity of phenol and cyanide onto CSAC biosorbent surface was 450.02 and 2.58 mg/g, respectively. Nonlinear regression analysis was used for determining the best fit model on the basis of error functions and also for calculating the parameters involved in kinetic and isotherm models. The kinetic study results revealed that Fractal-like mixed first second order model and Brouser-Weron-Sototlongo models for phenol and cyanide were capable to offer accurate explanation of biosorption kinetic. According to the experimental data results, CSAC with immobilization of bacterium S. odorifera (MTCC 5700) seems to be an alternative and effective biosorbent for the elimination of phenol and cyanide from binary component aqueous solution.

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“…For the last couple of decades, activated carbons as an adsorbent has been widely used for arsenic removal from water (Kalderis et al 2008;Mohan and Pittman 2007;Mondal et al 2008) as it possesses significant surface area with micro/mesopore structure along with extensive adsorption capacity. Commercial activated carbons are expensive and it is the main drawback of using this adsorbent in all the application sectors (Roy et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Biosorptive uptake of arsenic(V) by steam activated carbon from mung bean husk: equilibrium, kinetics, thermodynamics and modeling

2017

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The present investigation emphasizes on the biosorptive removal of toxic pentavalent arsenic from water using steam activated carbon prepared from mung bean husk (SAC-MBH). Characterization of the synthesized sorbent was done using different instrumental techniques, i.e., SEM, BET and point of zero charge. Sorptive uptake of As(V) over steam activated MBH as a function of pH (3-9), agitation speed (40-200 rpm), dosage (50-1000 mg) and temperature (298-313 K) was studied by batch process at arsenic concentration of 2 mg L -1 . Lower pH increases the arsenic removal over the pH range of 3-9. Among three adsorption isotherm models examined, Langmuir model was observed to show superior results over Freundlich model. The mean sorption energy (E) estimated by Dubinin-Radushkevich model suggested that the process of adsorption was chemisorption. Thermodynamic parameters confer that the sorption process was spontaneous, exothermic and feasible in nature. The pseudo-second-order rate kinetics of arsenic gave better correlation coefficients as compared to pseudo-first-order kinetics equation. Three process parameters, viz. adsorbent dosage, agitation speed and pH were opted for optimizing As(V) elimination using central composite design matrix of response surface methodology (RSM). The identical design setup was used for artificial neural network (ANN) for comparing its prediction capability with RSM towards As(V) removal. Maximum arsenic removal was observed to be 98.75% at sorbent dosage 0.75 gm L -1 , pH 3.0, agitation speed 160 rpm and temperature 308 K. The study concluded that SAC-MBH could be a competent adsorbent for As(V) removal and ANN model was better in arsenic removal predictability results than RSM model.

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Effects of adsorbent dose, its particle size and initial arsenic concentration on the removal of arsenic, iron and manganese from simulated ground water by Fe3+ impregnated activated carbon

Cited by 191 publications

References 20 publications

Adsorption of copper, nickel and lead ions from synthetic semiconductor industrial wastewater by palm shell activated carbon

Adsorption of copper, nickel and lead ions from synthetic semiconductor industrial wastewater by palm shell activated carbon

Equilibrium isotherm and kinetic studies for the simultaneous removal of phenol and cyanide by use of S. odorifera (MTCC 5700) immobilized on coconut shell activated carbon

Biosorptive uptake of arsenic(V) by steam activated carbon from mung bean husk: equilibrium, kinetics, thermodynamics and modeling

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